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WAEC GCE 2017 Biology Practical Expo: Free Biology Practical OBJ, THEORY/ESSAY Questions and Answers

BIOLOGY ALTERNATIVE TO PRACTICAL SOLUTION

1a)
i)pectoral girdle (scapula)
ii)
I scapula
II )spine of scapula
III) coracoid process
Iv)Glenoid cavity
V)Acromion
VI)Acromion.

1bi) Humerus

1bii)Ball and socket joint

1c)
-It holds the upper limbs to the axial skeleton
-Attachment of muscles.

1d)
I. Sunlight
II. Oxygen
III. Bubbles of gas
IV. test tube
V.funnel
VI .water
VII.Beaker
VIII.Elodea

1e)
i)To show that oxygen is given off During photosynthesis.
ii)
-Sunlight
-carbon (iv)oxide

1f)
i.water
iiElodea
iii. Photosynthesis
iv. The oxygen can be tested by bringing a glowing splincter close to it,which will be rekindled.

=================
2a) A – Symbiotic relationship (mutualism)
B – Predation
C – Symbiotic Relationship
D – Epiphytism
E – Parasitism Beneficial.

====================
2b)
Harmful Beneficial
A. B
C. E
D
=================
4a)
I) Operculum
II) Hind limb
III) Tympanum
Iv) Trunk

4bi)
Tabulate
Vertebra
i)they are poikilothermic or cold-blooded animal
ii)they have fins which are used for movement in water
iii)they have naked or moist and glandular skin with no external scales
iv)they do not show parental care
v)they have a two chambered heart

Vertebrate B
i)they are aquatic animal
ii)they have gills which used for gaseous exchange
iii)the skin is covered by scales but few are with out scale
iv)they show parental care for young onces
v)they have three chambered heart

4bii)
i)they both posses scale
ii)they both posses eyes
iii)they both posses respiratory organs

4ci)
A-amphibian
B-pisces

4cii)
i)they posses fins which are used for movement
ii)they posses swim bladder which posses swim bladder which enables them to maintain buoyancy in water
iii)they posses lateral line system for detectin of vibration

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